Rainbow-electronics MAX7034 Bedienungsanleitung PDF herunterladen (Seite 4)

MAX7034

315MHz/434MHz ASK Superheterodyne

Receiver

4 _______________________________________________________________________________________

Note 1: 100% tested at T

= +125°C. Guaranteed by design and characterization over entire temperature range.

Note 2: IRSEL is internally set to 375MHz IR mode. It can be left open when the 375MHz image-rejection setting is desired. Bypass

to AGND with a 1nF capacitor in a noisy environment.

Note 3: Peak power level. BER = 2 x 10

-3

, Manchester encoded, data rate = 4kbps, IF bandwidth = 280kHz.

Note 4: The voltage conversion gain is measured with the LNA input matching inductor and the LNA/Mixer resonator in place, and

does not include the IF filter insertion loss.

Note 5: Crystal oscillator frequency for other RF carrier frequency within the 300MHz to 450MHz range is (f

- 10.7MHz)/64 for

XTALSEL = 0V, and (f

- 10.7MHz)/32 for XTALSEL = DV

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

DATA FILTER

Maximum Bandwidth 50 kHz

DATA SLICER

Comparator Bandwidth 100 kHz

Maximum Load Capacitance C

LOAD

10 pF

Output High Voltage V

VDD5

Output Low Voltage 0V

CRYSTAL OSCILLATOR

XTALSEL

= 0V 6.6128

= 433.92MHz

XTALSEL

= DV

13.2256

XTALSEL

= 0V 4.7547

Crystal Frequency (Note 5) f

XTAL

= 315MHz

XTALSEL

= DV

9.5094

MHz

Crystal Tolerance 50 ppm

Input Capacitance From each pin to ground 6.2 pF

AC ELECTRICAL CHARACTERISTICS (continued)

(

Typical Application Circuit

, V

VDD5

= +4.5V to +5.5V, all RF inputs are referenced to 50Ω, f

= 433.92MHz, T

= -40°C to +125°C,

unless otherwise noted. Typical values are at V

VDD5

= +5.0V and T

= +25°C.) (Note 1)

1 2 3 4 5 6 7 8 9 ... 12 13

Receiver 1

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